St13runtime_error Grim wallet

[belalnet2001]

Hello

i have this problem in my Grim  wallet

EXCEPTION: St13runtime_error       
init_blockindex(): error opening database environment Corruption: 89 missing files; e.g.: C:\Users\belal\AppData\Roaming\Grim\txleveldb/004994.sst       
G:\grim-qt-v1.2.1.exe in Runaway exception       


thank you